Osborne R, Nelson L, Fehnel S, Williams N, Bender RH, Ziemiecki R, Gymnopoulou E, De Paepe E, Norcross L, Heijnen E, Ispas G, Cheret A, Comeaux C, Callendret B, Vandendijck Y, Chan E, Scott J. Measurement of symptoms in respiratory syncytial virus–infected adults: meaningful within-patient change thresholds for the respiratory infection intensity and impact questionnaire (RiiQ). Poster presented at the 8th ESWI Influenza Conference Scientific and SPI Virtual Programme; December 4, 2021.